[INFO] cloning repository https://github.com/gobith/tafl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gobith/tafl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobith%2Ftafl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobith%2Ftafl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5668342a37d589dc0925dbcdf55cbd50fedddfba
[INFO] testing gobith/tafl against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobith%2Ftafl" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gobith/tafl
[INFO] finished tweaking git repo https://github.com/gobith/tafl
[INFO] tweaked toml for git repo https://github.com/gobith/tafl written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gobith/tafl on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gobith/tafl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ccd6f291c097fd4c356e24c7652b123c3f2ac84648d4a0fc80e1c707029ec98
[INFO] running `Command { std: "docker" "start" "-a" "1ccd6f291c097fd4c356e24c7652b123c3f2ac84648d4a0fc80e1c707029ec98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ccd6f291c097fd4c356e24c7652b123c3f2ac84648d4a0fc80e1c707029ec98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ccd6f291c097fd4c356e24c7652b123c3f2ac84648d4a0fc80e1c707029ec98", kill_on_drop: false }`
[INFO] [stdout] 1ccd6f291c097fd4c356e24c7652b123c3f2ac84648d4a0fc80e1c707029ec98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 56cca52f5a5a3c8fe1e7124a11c0b6b4347c77d2e2ce1804fd65e16de412fd20
[INFO] running `Command { std: "docker" "start" "-a" "56cca52f5a5a3c8fe1e7124a11c0b6b4347c77d2e2ce1804fd65e16de412fd20", kill_on_drop: false }`
[INFO] [stderr]    Compiling tafl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/position.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Position {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub fn from(int: i32) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from` and `brandubh` are never used
[INFO] [stdout]   --> src/tafl_old.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Tafl {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn from(tfl: &str) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn brandubh() -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Brandubh` is never constructed
[INFO] [stdout]  --> src/brandubh.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Brandubh {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/brandubh.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Brandubh {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hnefatafl` is never constructed
[INFO] [stdout]  --> src/hnefatafl.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Hnefatafl {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/hnefatafl.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Hnefatafl {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tafl` is never constructed
[INFO] [stdout]  --> src/tafl.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Tafl<const N: usize> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/tafl.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct State<const N: usize> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hnefatafl` is never used
[INFO] [stdout]   --> src/tafl.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn hnefatafl() -> Tafl<121> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `brandubh` is never used
[INFO] [stdout]   --> src/tafl.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn brandubh() -> Tafl<49> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `move_piece` is never used
[INFO] [stdout]   --> src/tafl.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | impl<const N: usize> Tafl<N> {
[INFO] [stdout]    | ---------------------------- method in this implementation
[INFO] [stdout] 97 |     pub fn move_piece(&mut self, start_idx: usize, end_idx: usize) -> () {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `switch_side`, `move_piece`, `validate_move`, and `next_state` are never used
[INFO] [stdout]    --> src/tafl.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl<const N: usize> State<N> {
[INFO] [stdout]     | ----------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 116 |     fn switch_side(&mut self) -> () {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     fn move_piece(&self, start_idx: usize, end_idx: usize) -> Result<State<N>, String> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn validate_move(&self, start_idx: usize, end_idx: usize) -> Result<(), String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     fn next_state(&self, start_idx: usize, end_idx: usize) -> State<N> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Tile` is never used
[INFO] [stdout]    --> src/tafl.rs:280:10
[INFO] [stdout]     |
[INFO] [stdout] 280 | pub enum Tile {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]    --> src/tafl.rs:290:12
[INFO] [stdout]     |
[INFO] [stdout] 289 | impl Tile {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] 290 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Side` is never used
[INFO] [stdout]    --> src/tafl.rs:296:6
[INFO] [stdout]     |
[INFO] [stdout] 296 | enum Side {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `tile_is_same_side` and `tile_is_opposite_side` are never used
[INFO] [stdout]    --> src/tafl.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 301 | impl Side {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] 302 |     fn tile_is_same_side(&self, tile: Tile) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 311 |     fn tile_is_opposite_side(&self, tile: Tile) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "56cca52f5a5a3c8fe1e7124a11c0b6b4347c77d2e2ce1804fd65e16de412fd20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56cca52f5a5a3c8fe1e7124a11c0b6b4347c77d2e2ce1804fd65e16de412fd20", kill_on_drop: false }`
[INFO] [stdout] 56cca52f5a5a3c8fe1e7124a11c0b6b4347c77d2e2ce1804fd65e16de412fd20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 4b2e7ec1efdd5959e58a40e45dce1bd6ed71b2375384400c9fd21fdf1a185779
[INFO] running `Command { std: "docker" "start" "-a" "4b2e7ec1efdd5959e58a40e45dce1bd6ed71b2375384400c9fd21fdf1a185779", kill_on_drop: false }`
[INFO] [stderr]    Compiling tafl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `CastleWithKing` is never constructed
[INFO] [stdout]    --> src/tafl.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 280 | pub enum Tile {
[INFO] [stdout]     |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 286 |     CastleWithKing,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Tile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "4b2e7ec1efdd5959e58a40e45dce1bd6ed71b2375384400c9fd21fdf1a185779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b2e7ec1efdd5959e58a40e45dce1bd6ed71b2375384400c9fd21fdf1a185779", kill_on_drop: false }`
[INFO] [stdout] 4b2e7ec1efdd5959e58a40e45dce1bd6ed71b2375384400c9fd21fdf1a185779
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 9c80537844bb3b42889d0a17d916c6ff0d4de78dde8e7973187cdc336f169082
[INFO] running `Command { std: "docker" "start" "-a" "9c80537844bb3b42889d0a17d916c6ff0d4de78dde8e7973187cdc336f169082", kill_on_drop: false }`
[INFO] [stderr] warning: variant `CastleWithKing` is never constructed
[INFO] [stderr]    --> src/tafl.rs:286:5
[INFO] [stderr]     |
[INFO] [stderr] 280 | pub enum Tile {
[INFO] [stderr]     |          ---- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 286 |     CastleWithKing,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Tile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tafl` (bin "tafl" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/build/tafl/9eee85e3f5cb4b92/deps/tafl-9eee85e3f5cb4b92)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test tests::test_move::tfl_test_move_piece_down_error ... ok
[INFO] [stdout] test tests::test_move::tfl_test_move_piece_right_error ... ok
[INFO] [stdout] test tests::test_move::tfl_test_move_piece_up_error ... ok
[INFO] [stdout] test tests::test_move::tfl_test_move_piece_left_error ... ok
[INFO] [stdout] test tests::tests::array_equality ... ok
[INFO] [stdout] test tests::tests::tfl_test ... ok
[INFO] [stdout] test tests::tests::tfl_test_brandubh ... ok
[INFO] [stdout] test tests::tests::tfl_test_brandubh_old ... ok
[INFO] [stdout] test tests::tests::tfl_test_hnefatafl ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_piece_capture_right ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_piece_capture_down ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_wrong_piece ... ok
[INFO] [stdout] test tests::tests::tfl_test_tafl_brandubh ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_piece_capture_left ... ok
[INFO] [stdout] test tests::tests::tfl_test_tafl_hnefatafl ... ok
[INFO] [stdout] test tests::tests::tile_is_empty ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_piece_capture_up ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_piece_up ... ok
[INFO] [stdout] test tests::tests::tfl_test_move_piece ... FAILED
[INFO] [stdout] test tests::tests::tfl_test_brandubh_loop_old ... ok
[INFO] [stdout] test tests::tests::tfl_test_brandubh_loop ... ok
[INFO] [stdout] test tests::tests::tfl_test_hnefatafl_loop has been running for over 60 seconds
[INFO] [stdout] test tests::tests::tfl_test_hnefatafl_loop ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::tests::tfl_test_move_piece stdout ----
[INFO] [stdout] ⬛ 	⬜ 	🔴 	🔴 	🔴 	⬜ 	⬛ 	
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[INFO] [stdout] 🔴 	⬜ 	⬜ 	⭕ 	⬜ 	⬜ 	🔴 	
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[INFO] [stdout] 🔴 	🔴 	⭕ 	⬤ 	⭕ 	🔴 	🔴 	
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[INFO] [stdout]  
[INFO] [stdout] Turn: Attacker
[INFO] [stdout] 
[INFO] [stdout] Start_idx 10
[INFO] [stdout] End_idx 7
[INFO] [stdout] Start_row 1
[INFO] [stdout] End_row 1
[INFO] [stdout] Start_column 3
[INFO] [stdout] End_column 0
[INFO] [stdout] Index from End is 8
[INFO] [stdout] Index from End is 9
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::tests::tfl_test_move_piece' (28) panicked at src/tafl.rs:250:21:
[INFO] [stdout] attempt to subtract with overflow
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59f590bb1632 - std[840933623431fd06]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59f590bb1632 - std[840933623431fd06]::backtrace_rs::backtrace::trace_unsynchronized::<std[840933623431fd06]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59f590bb1632 - std[840933623431fd06]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x59f590bb1632 - <<std[840933623431fd06]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8f93d80df273fe75]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x59f590bc611a - <core[8f93d80df273fe75]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x59f590bc611a - core[8f93d80df273fe75]::fmt::write
[INFO] [stdout]    6:     0x59f590bb6466 - std[840933623431fd06]::io::default_write_fmt::<alloc[40b2bae28975ac47]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x59f590bb6466 - <alloc[40b2bae28975ac47]::vec::Vec<u8> as std[840933623431fd06]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x59f590b8faff - <std[840933623431fd06]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x59f590b8faff - std[840933623431fd06]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x59f590ba9969 - std[840933623431fd06]::panicking::default_hook
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x59f590b4521e - <alloc[40b2bae28975ac47]::boxed::Box<dyn for<'a, 'b> core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x59f590b4521e - test[2f1252070343a163]::test_main_with_exit_callback::<test[2f1252070343a163]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59f590ba9b22 - <alloc[40b2bae28975ac47]::boxed::Box<dyn for<'a, 'b> core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x59f590ba9b22 - std[840933623431fd06]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x59f590b8fbea - std[840933623431fd06]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x59f590b87589 - std[840933623431fd06]::sys::backtrace::__rust_end_short_backtrace::<std[840933623431fd06]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x59f590b90a0d - __rustc[5b4a0c6d8cc4a177]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x59f590bc682c - core[8f93d80df273fe75]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x59f590bc7889 - core[8f93d80df273fe75]::panicking::panic_const::panic_const_sub_overflow
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panicking.rs:175:17
[INFO] [stdout]   20:     0x59f590b2a461 - <tafl[b4eea8263c6a9782]::tafl::State<49usize>>::next_state
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tafl.rs:250:21
[INFO] [stdout]   21:     0x59f590b29b44 - <tafl[b4eea8263c6a9782]::tafl::State<49usize>>::move_piece
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tafl.rs:130:38
[INFO] [stdout]   22:     0x59f590b2b43b - <tafl[b4eea8263c6a9782]::tafl::Tafl<49usize>>::move_piece
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tafl.rs:98:26
[INFO] [stdout]   23:     0x59f590b30980 - tafl[b4eea8263c6a9782]::tests::tests::tfl_test_move_piece
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tests.rs:111:13
[INFO] [stdout]   24:     0x59f590b2f657 - tafl[b4eea8263c6a9782]::tests::tests::tfl_test_move_piece::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tests.rs:108:29
[INFO] [stdout]   25:     0x59f590b35dd6 - <tafl[b4eea8263c6a9782]::tests::tests::tfl_test_move_piece::{closure#0} as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x59f590b395cb - <fn() -> core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x59f590b395cb - test[2f1252070343a163]::__rust_begin_short_backtrace::<core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>, fn() -> core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:663:18
[INFO] [stdout]   28:     0x59f590b45e2a - test[2f1252070343a163]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:74
[INFO] [stdout]   29:     0x59f590b45e2a - <core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   30:     0x59f590b45e2a - std[840933623431fd06]::panicking::catch_unwind::do_call::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}>, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40
[INFO] [stdout]   31:     0x59f590b45e2a - std[840933623431fd06]::panicking::catch_unwind::<core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>, core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19
[INFO] [stdout]   32:     0x59f590b45e2a - std[840933623431fd06]::panic::catch_unwind::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}>, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14
[INFO] [stdout]   33:     0x59f590b45e2a - test[2f1252070343a163]::run_test_in_process
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:27
[INFO] [stdout]   34:     0x59f590b45e2a - test[2f1252070343a163]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:607:43
[INFO] [stdout]   35:     0x59f590b402f4 - test[2f1252070343a163]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:637:41
[INFO] [stdout]   36:     0x59f590b402f4 - std[840933623431fd06]::sys::backtrace::__rust_begin_short_backtrace::<test[2f1252070343a163]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   37:     0x59f590b48922 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   38:     0x59f590b48922 - <core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   39:     0x59f590b48922 - std[840933623431fd06]::panicking::catch_unwind::do_call::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40
[INFO] [stdout]   40:     0x59f590b48922 - std[840933623431fd06]::panicking::catch_unwind::<(), core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19
[INFO] [stdout]   41:     0x59f590b48922 - std[840933623431fd06]::panic::catch_unwind::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14
[INFO] [stdout]   42:     0x59f590b48922 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   43:     0x59f590b48922 - <std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1} as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   44:     0x59f590bb0edf - <alloc[40b2bae28975ac47]::boxed::Box<dyn core[8f93d80df273fe75]::ops::function::FnOnce<(), Output = ()> + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   45:     0x59f590bb0edf - <std[840933623431fd06]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   46:     0x7db50714aaa4 - <unknown>
[INFO] [stdout]   47:     0x7db5071d7a64 - clone
[INFO] [stdout]   48:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::tests::tfl_test_move_piece
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 21 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 74.45s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin tafl`
[INFO] running `Command { std: "docker" "inspect" "9c80537844bb3b42889d0a17d916c6ff0d4de78dde8e7973187cdc336f169082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c80537844bb3b42889d0a17d916c6ff0d4de78dde8e7973187cdc336f169082", kill_on_drop: false }`
[INFO] [stdout] 9c80537844bb3b42889d0a17d916c6ff0d4de78dde8e7973187cdc336f169082
